2-Inch Thermoplastic Dewatering Pumps Refer to pump manual for General Operating and Safety Instructions.

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Specifications Information and Repair Parts Manual 3824-99, 3825-99 & 382A-99 Please read and save this Repair Parts Manual.

1 Specifications Information and Repair Parts Manual , & 382A-99 Please read and save this Repair Parts Manual. Read this manual and the General Operating Instructions carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. The Safety Instructions are contained in the General Operating Instructions. Failure to comply with the safety instructions accompanying this product could result in personal injury and/or property damage! Retain instructions for future reference. AMT reserves the right to discontinue any model or change specifications at any time without incurring any obligation American Machine & Tool Co., Inc. of PA, A Subsidiary of The Gorman-Rupp Company, All Rights Reserved. Periodic maintenance and inspection is required on all pumps to insure proper operation. Unit must be clear of debris and sediment. Inspect for leaks and loose bolts. Failure to do so voids warranty. 2-Inch Thermoplastic Dewatering Pumps Refer to pump manual for General Operating and Safety Instructions. DESCRIPTION These centrifugal pumps include a precision mechanical seal with stainless steel spring, Buna N seals, carbon face and ceramic seat, and a built-in check valve for better self-priming capabilities (up to 20 ft. suction lift). Clog resistant impeller is capable of handling solids up to 7/16" diameter. Pumps include molded carrying handle, and two 2" NPT pipe nipples (optional rubber foot pads available). Handle liquids from 40º to 130º F (4º to 54º C). For use with nonflammable, non-abrasive liquids compatible with pump component materials. Applications include pumping clear, clean water, salt water, and some liquid fertilizers and herbicides. An optional EPDM Seal/O-ring/Flapper Kit (see Repair Parts List) is available for pumping Alachlor Herbicides (such as Monsanto's Lasso). If the fertilizer or herbicide is not compatible with Buna-N (standard) or EPDM (optional) rubber materials, do not use these pumps. MAINTENANCE To prevent Accidental starting always remove spark plug, or disconnect and ground spark plug wire before attempting to service or remove any component. MECHANICAL SEAL REPLACEMENT Refer to Figures 1, 2, and 3. IMPORTANT: Replace seal seat, (Ref. No. 22) and seal head (Ref. No. 23) at the same time to ensure proper mating of mechanical seal components! 1. Unthread fasteners (Ref. No. 16), nuts (Ref. No. 25) and remove casing (Ref. No. 15) and casing seal (Ref. No. 7) from adapter (Ref. No. 3). Unthread fasteners (Ref. Nos. 11 and 19) and remove volute (Ref. No. 20) and volute seal (Ref. No. 6) from adapter. 2. Unthread impeller fastener (Ref. No. 10) and remove impeller (Ref. No. 9), impeller seal (Ref. No. 4) and shims (Ref. No. 21). NOTE: To keep shaft from turning, hold impeller while unthreading impeller fastener. 3. Pry seal seat from impeller recess with a screwdriver (See Figure 1). 4. Remove adapter by unthreading adapter fasteners (Ref. No. 5) and fastener seals (Ref. No. 4). Press old seal head and adapter seal (Ref. No. 24) out of adapter by pushing from engine side. 5. Clean adapter and impeller seal recesses before installing new pieces. Figure 1 Mechanical Seal Replacement 6. Carefully wipe polished surface of new seal seat with a clean cloth. 7. Wet rubber portion of seal seat with a light coating of soapy water. 8. Press seal seat squarely into recess in impeller. If seal seat does not press squarely into recess, it can be adjusted by pushing on it with a piece of pipe. Always use a piece of cardboard between pipe and seal seat to avoid scratching lapped, highly polished surface of seal seat (handle it carefully). 9. After seal seat is in place, ensure that it is clean and has not been marred. 10. Using a clean cloth, wipe shaft and make certain that it is completely clean. 11. Place adapter seal (O-ring) onto seal head behind flange and press assembly into adapter as shown in Figure 2. Do not touch or wipe polished face of seal head. 12. Secure adapter on pedestal mounting face, using fasteners and fastener seals. Be sure to replace gasket (Ref. No. 31) between engine and adapter, if removed during disassembly /2011

Specifications Information and Repair Parts Manual 3824-99, 3825-99 & 382A-99 2-Inch Thermoplastic Dewatering Pedestal Pump Tighten adapter fasteners evenly to avoid cocking or damaging adapter. 13.

2 Specifications Information and Repair Parts Manual , & 382A-99 2-Inch Thermoplastic Dewatering Pedestal Pump Tighten adapter fasteners evenly to avoid cocking or damaging adapter. 13. Replace impeller and shims, ensuring that key (Ref. No. 8) is in place and lock impeller to shaft with fastener and impeller seal on fastener. 14. Replace volute seal and volute with fasteners, ensure that check valve (Ref. No. 12) is in place then remount casing seal and pump casing with fasteners and nuts. IMPORTANT: Always inspect all seals when unit is disassembled. Replace when rubber is hard, cracked, or worn. When reassembling parts with O-ring seals or gaskets, it is sometimes helpful to apply a small amount of soapy water on O-ring so that parts slide over O-ring without pinching or shaving it. SHIM ADJUSTMENT When installing a replacement impeller or mechanical seal, it may be necessary to vary the number of shims (Ref. No. 21) that will be required. This is easily done by adding one 0.010" shim more than was removed and reassembling pump as described. Ensure that casing is snugly in place and check shaft to make sure it is turning freely. If it turns freely, check to ensure that adapter (Ref. No. 3) and casing (Ref. No. 15) are fitted tight together. If they are not, tighten fasteners (Ref. No. 16) and recheck shaft for free turning. Tighten carefully, turning shaft while tightening. If shaft seizes before fasteners (Ref. No. 16) are completely tight, disassemble pump and remove one shim and repeat reassembly. If any time during above operation shaft does not turn free, follow procedure indicated above and repeat procedure. Above procedure ensures that pump will have proper running clearance (less than 0.010") between impeller and casing and perform like a new unit with new impeller or motor. Figure 2 Mechanical Seal Replacement /2011

3 Specifications Information and Repair Parts Manual , & 382A-99 For Repair Parts contact dealer where pump was purchased. Please provide following information: -Model Number -Serial Number (if any) Part description and number as shown in parts list Figure 3 Repair Parts Illustration /2011

4 Specifications Information and Repair Parts Manual , & 382A-99 Repair Parts List Part Number for Models: Ref. 3 ½ HP B&S 5 ½ HP B&S 5HP Honda No. Description A-99 Qty. 1 Engine Slinger Washer - Buna-N Adapter Fastener Seal - Buna-N * * * 5 5 Adapter Fastener Volute Seal - Buna-N * * * 1 7 Casing Seal - Buna-N * * * 1 8 Key Impeller Impeller Fastener Volute Fastener Flapper Valve - Buna-N Fill Plug Fill Plug Seal - Buna-N * * * 1 15 Casing Fastener * * * Drain Plug Drain Plus Seal - Buna-N * * * 1 19 Volute Fastener Volute Impeller Shim Set & 23 Shaft Seal Assembly - Buna-N Adapter Seal - Buna-N * * * 1 25 Nut * * * Nut (optional) * * * 2 27 Rubber Foot (optional) Fastener (optional) * * * 2 29 Nut (optional) * * * 2 30 Fastener (optional) * * * 2 31 Gasket " NPT Pipe Nipple * * * 2 Seal Kit - Buna N (standard) Seal Kit - EPDM (optional) (includes Ref. Nos. 2, 4, 6, 7, 12, 14, 18, 22, 23, 24, and 31) (*) Standard hardware item, available locally /2011

5 Specifications Information and Repair Parts Manual NOTES:

6 Specifications Information and Repair Parts Manual NOTES:

MAINTENANCE CLEANING. MECHANICAL SEAL REPLACEMENT Refer to figures 1 and 2. SHIM ADJUSTMENT

MAINTENANCE CLEANING. MECHANICAL SEAL REPLACEMENT Refer to figures 1 and 2. SHIM ADJUSTMENT Please read and save this Repair Parts Manual. Read this manual and the General Operating Instructions carefully before attempting to assemble, install, operate or maintain the product described. Protect